Isaac gregg



L'GREGG. BRICK MACHINE.

No. 11,422. Patented Aug. ,1,' 18 54.

UNITED sTATEs'P ENT' OFFICE.

, ISAAC GREGG, or PITTsBURG, PENNSYLVANIA.

BRICK-PRESS.

3 Specification of Letters Patent No. 11,422, dated August 1, 1854.

To all whom it may concern:

Be it known that I, ISAAC Grace, of Pitts burg,lin the county of Allegheny and State of Pennsylvania, have invented a new: and Improved Brick-Press; and I do hereby declare that thefollowing is a full and exact description thereof, reference being bad to the accompanying drawings, making part of this specification, Figure 1 being a side elevation ofgmy improved brick press; Fig. 2, a longitudinal vertical section through the part containingthe followers, molds, and

pressing-cylinder thereof; Fig. 5, a trans verse vertical section in the line a: a: of Fig. 1, and Figs. 3 and 4 views ofparts detached. Like letters designate corresponding parts in all the figures. I

The nature of my invention consists in giving a quiveringor shaking motion to the combined brick-dis charger and mold-duster C, by means of theelastic pin 39, which pro jects therefrom, acting upon the serrated edge 7*, or by any other equivalent means,

for the purposeset forth; secondly, inthe employment of cutters, or pulverizers, H, H, arranged and operating substantially as hereinafter described, in combination with the pressure roller G, for the purpose of breaking upsand pulverizing the hard crusts of clay produced by said roller, and for properly workingandsupplying clay to the molds.

The general construction and operation of the clay receptacle, the pressure roller G, and the mold carriage D,.2l-I'B substantially the same as in the machines before patented by me, and require no further description in the present instance. i The reciprocating motion maybe .given to the mold carriage and other parts by any convenient and well known device. In the drawings, I have represented the driving I shaftA, as provided with a pinion 6, (shown by dotted lines in Fig. 1,) which plays into a mangle wheel B, alternately gearing into n the inner and outer cogs of the curved rack a, thereof, and consequently causing said wheel to turn alternately in opposite direc tions. By means of a cog-wheel secured to said mangle wheel and gearing into the cogwheel I, (Fig. 1,) the proper alternate motion of the pressure roller is produced; and

by means of a rack and pinion operated by the same wheel, the reciprocating motion of the mold carriage is obtained.

A rope, or chain, 0, is secured, near its center, to the driving shaft A, by an encircling ring; (or other suitable means;) and one end of it first passes thence down around a pulley d, situated beneath said shaft; then both ends respectively pass up over pulleys c, c, (as shown in Fig. 1,) and extend therefrom downward to be secured to horizontal vibratory arms 9, g, attached to pivotsh, 71.. On these pivots also vibrate vertical arms 2', z, &c., to which are hinged horizontal rods Z, Z3, &c., connecting them with the brick-dischargers C, C, that oscillate on rods m, m, &c., by which they are suspended from the frame above. As the pinion b alternately traverses the inner and outer side of the curved rack 0, its shaft A is correspondently raised and lowered a certain distance, and consequently produces a reciprocating lengthwise motion of the rope,

orchain, c, and bymeans of the devices just.

described, vibrates the brick-dischargers C, O, backward and forward transversely over the brick molds; and the parts are so arranged that this movement shall take place atxthe proper moment and to a proper extent, to discharge the bricks upon the platform 9, as soon as they are entirely raised out of the molds. Weights f, f, are employed to draw down the levers g, g, each time, after being raised by the rope c.

The briok-dischargers C, C, are also vess'els,'provided with finely perforated bottoms n, n, (as represented in Fig. 4,) for containing,and sifting sand into the molds, when the bricks are discharged therefrom. In order to do this effectually, I find it necessary to agitate the brick-dischargers more than they would be by their mere oscillation. To accomplish this, I attach to each brickdischarger a projecting, elastic pin, or rod,

19, which comes in contact with the serrated edge ofa strip of metal r, secured transversely across the platform g, in the proper position, (as shown in Figs. 1, and 5,) and thus gives said combined 'brick-discharger and moldduster, a quivering motion, while oscillating over the mold-carriage, whereby the molds are effectually dusted. 4 The followers 0, 0, &c., of the mold carriage D, are raised, for the purpose of expelling the bricks from the molds, by means of lifters E, E, vibrating horizontally on parallel bars .9, s, as represented in the drawings. At the proper moment, as the moldcarriageadvances, it strikes a projection u, on either 1ifter,.and carries it forward with the molds.

itself, thereby causing'the parallel bars 8, s, to approach a perpendicular. position, and consequently raise the lifter sufficiently to elevate the followers even with the tops of As the mold-carriage again recedes, the lifters are again returned to their proper positions by springs t, 2?.

Within the clay receptacle, I place pulverizers H, H, on both sides of, and parallel with, the pressure roller G; and cause them to revolve always in the direction opposite to that of said roller, by means of pinions, on their shafts, gearing into the cog-wheel I, on the roller shaft. Each pulverizer is composed of a series of spur-wheels, H, H, &c., (Fig. 3,) situated at suitable distances (say two or three inches) apart, on the shaft 70. The spurs, or knives, j, j, &c., should reach near to the pressure roller and the mold-carriage, without actually touching them. Since these pulverizers always move in the direction opposite to that of the pressure roller, the one that revolves behind said roller, at each alternate movement of the machine, acts in such a manner as to tear up the continuous crust of clay produced under the pressure roller, and to properly pulverize and mix it with the fresh clay; while the other pulverizer, at the same time,

assists the roller in forcing the clay down to the molds. By this means, the machine is prevented from becoming clogged, and perfectly feeds the clay to the molds, without requiring, for thatipurpose, any manual attendance, which, but for this device, would be absolutely necessary.

Having thus fully described my improved brick-machine, what I claim therein as new and desire to secure by Letters Patent, is

1. Giving aquivering, or shaking motion to the combined brick-discharger and moldduster C, by means of the elastic pin 0, which projects therefrom, acting upon the serrated edge 1", or by any other equivalent means, for the purpose set forth.

2. Ialso claim, the cutters, or pulverizers, H, H, when arranged and operating substantially as herein described, in combination with the pressure roller G, for the purpose of breaking up and pulverizing the 7 hard crusts of clay produced by said roller, and for properly working and supplying clay to the molds.

ISAAC GREGG.

Witnesses:

CHARLES D. FREEMAN, SAMUEL P. HALL. 

